var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var ejs = require('ejs')

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var userInfoRouter = require('./routes/userInfo');
var uploadRouter = require('./routes/upload');
var socketRouter = require('./routes/socket');
var datasRouter = require('./routes/datas');

var app = express();

app.set('views engine', 'ejs')
app.set("views", path.join(__dirname, './views'));
app.engine('html', ejs.__express)
// app.set('view engine', 'html')

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', indexRouter);
app.use('/users', usersRouter);
app.use('/userInfo', userInfoRouter);
app.use('/upload', uploadRouter);
app.use('/socket', socketRouter);
app.use('/datas', datasRouter);

// Set up cross domain access
app.all('*', (req, res, next) => {
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Headers", "X-Requested-With");
  res.header("Access-Control-Allow-Methods", "PUT,POST,GET,DELETE,OPTIONS");
  res.header("X-Powered-By", ' 3.2.1');
  res.header("Content-Type", "application/json;charset=utf-8");
  next();
});

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
